CVE-2020-26978
First published: Tue Dec 15 2020(Updated: )
Using techniques that built on the slipstream research, a malicious webpage could have exposed both an internal network's hosts as well as services running on the user's local machine.
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Thunderbird | <78.6 | 78.6 |
| Firefox | <84.0 | |
| Firefox ESR | <78.6.0 | |
| Thunderbird | <78.6.0 | |
| Firefox | <84 | 84 |
| Firefox ESR | <78.6 | 78.6 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1677047
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-54/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-55/
- https://www.mozilla.org/en-US/security/advisories/mfsa2020-56/
- https://www.mozilla.org/security/advisories/mfsa2020-54/
- https://www.mozilla.org/security/advisories/mfsa2020-55/
- https://www.mozilla.org/security/advisories/mfsa2020-56/
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is the severity of CVE-2020-26978?
CVE-2020-26978 is classified as a high severity vulnerability that could lead to information disclosure.
How do I fix CVE-2020-26978?
To mitigate CVE-2020-26978, users should upgrade to Firefox version 84 or later, or to the latest versions of Firefox ESR or Thunderbird.
What types of software are affected by CVE-2020-26978?
CVE-2020-26978 affects Mozilla Firefox versions before 84, Firefox ESR versions before 78.6, and Thunderbird versions before 78.6.
Can CVE-2020-26978 be exploited remotely?
Yes, CVE-2020-26978 can be exploited via a malicious webpage that users visit.
What kind of data could be exposed due to CVE-2020-26978?
CVE-2020-26978 could expose internal network hosts and services running on the user's local machine.
- agent/type
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- agent/references
- agent/author
- agent/severity
- agent/description
- collector/mitre-cve
- source/MITRE
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- agent/event
- agent/trending
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- collector/mozilla-advisory
- source/Mozilla
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/nvd-index
- agent/softwarecombine
- agent/tags
- vendor/mozilla
- canonical/thunderbird
- canonical/firefox
- canonical/firefox esr